19994800

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:255

約数の個数: 120

約数和(自身を含む): 56675936

約数和(自身を除く): 36681136

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 37, 40, 50, 56, 70, 74, 80, 100, 112, 140, 148, 175, 185, 193, 200, 259, 280, 296, 350, 370, 386, 400, 518, 560, 592, 700, 740, 772, 925, 965, 1036, 1295, 1351, 1400, 1480, 1544, 1850, 1930, 2072, 2590, 2702, 2800, 2960, 3088, 3700, 3860, 4144, 4825, 5180, 5404, 6475, 6755, 7141, 7400, 7720, 9650, 10360, 10808, 12950, 13510, 14282, 14800, 15440, 19300, 20720, 21616, 25900, 27020, 28564, 33775, 35705, 38600, 49987, 51800, 54040, 57128, 67550, 71410, 77200, 99974, 103600, 108080, 114256, 135100, 142820, 178525, 199948, 249935, 270200, 285640, 357050, 399896, 499870, 540400, 571280, 714100, 799792, 999740, 1249675, 1428200, 1999480, 2499350, 2856400, 3998960, 4998700, 9997400, 19994800]

約数ペア:

[(1, 19994800), (2, 9997400), (4, 4998700), (5, 3998960), (7, 2856400), (8, 2499350), (10, 1999480), (14, 1428200), (16, 1249675), (20, 999740), (25, 799792), (28, 714100), (35, 571280), (37, 540400), (40, 499870), (50, 399896), (56, 357050), (70, 285640), (74, 270200), (80, 249935), (100, 199948), (112, 178525), (140, 142820), (148, 135100), (175, 114256), (185, 108080), (193, 103600), (200, 99974), (259, 77200), (280, 71410), (296, 67550), (350, 57128), (370, 54040), (386, 51800), (400, 49987), (518, 38600), (560, 35705), (592, 33775), (700, 28564), (740, 27020), (772, 25900), (925, 21616), (965, 20720), (1036, 19300), (1295, 15440), (1351, 14800), (1400, 14282), (1480, 13510), (1544, 12950), (1850, 10808), (1930, 10360), (2072, 9650), (2590, 7720), (2702, 7400), (2800, 7141), (2960, 6755), (3088, 6475), (3700, 5404), (3860, 5180), (4144, 4825)]